I fully agree with the post of yours, @marius19. I think that we positive thinking is the main difference between happy people to sad ones, you can wake up and think for your self that this is a bad day, which will cause you to feel that you really experience a bad day. But instead of it, we have to be positive and start to look on the bright side of life, but it is not easy.
Thank you for sharing this great post, you have just received my upvote :)